I found a way to force browser to refresh by changing the web page name so that it load the 404, then only I get the latest build. Mobile path render is weird, I have reduced the file down to 5mb, Chrome mobile still won’t load.
After a few preview, Blender crash or preview won’t display, leaving a white bar at the top, I think the red loading line is best at the top of the browser window, inlineframe don’t fit all device.